Keysight N2790A User Manual page 10

Safety Information
WARNING
WARNING
WARNING
WARNING
WARNING
10
The probe inputs are safety rated to a maximum of 1000 Vrms
CAT II and 600 Vrms CAT III between either input and earth
!
ground. These maximum ratings apply regardless of the
attenuation setting of the probe. Do not apply voltages greater
than 1000 Vrms CAT II or 600 Vrms CAT III between either input and
ground.
The probe tips that are provided are rated for 1000 Vrms CAT
II and 600 Vrms CAT III usage. Other probe tips may be used if
!
they have the appropriate ratings and the same style
connectors.
The measurement category of a combination of a PROBE
ASSEMBLY and an accessory is the lower of the measurement
!
categories of the PROBE ASSEMBLY and of the accessory.
Before turning on the instrument, you must connect the protective earth
terminal of the instrument to the protective conductor of the (mains)
power cord. The mains plug shall only be inserted in a socket outlet
provided with a protective earth contact. You must not negate the
protective action by using an extension cord (power cable) without a
protective conductor (grounding). Grounding one conductor of a
two-conductor outlet is not sufficient protection.
Only fuses with the required rated current, voltage, and specified type
(normal blow, time delay, etc.) should be used. Do not use repaired fuses
or short-circuited fuse-holders. To do so could cause a shock or fire
hazard.
Keysight N2790A Differential Voltage Probe User Guide